Create your own at Storyboard ThatSensorimotor: (0-2) This is the stage where people begin to form a schemata , or way to think about things. The baby in this image is exploring the world by interacting through use of senses with things that he considers safe, like toy blocks and his father. Pre-Operational: (2-6/7) In this stage, humans become more independent but have a very low concept of conservation and reversibility. This child in the panel is at the pre-operational stage and doesn't understand that while his ball may be deflated, it can be re inflated. Concrete Operational: (6/7-11/12) This is the stage where understanding and point of view is developed and well as a better concept of reversibility. People start to understand that other people do not see the world as they themselves see it. Formal Operational: (12+) In this stage, the idea a thinking is tested by abstract ideas and theory. Although not all people reach this point, it creates a use a finding opinions and outside of the box reasoning. These new concept become apparent.